Pile-cutting device



Sept. 2 1924. 1,507,145

' P. A. WAGNER FILE CUTTING DEVICE Filed March 13, 1923 gal M 5 Patented Sept. 2, 1924.

NITED S TA T'E'S PAUL A. WAGNER, OF ERSEY CITY, NEW JERSEY.

PILE-CUTTING DEVICE.

Application filed March 13, 1923. Serial No. 624,688.

To all whom it may concern:

Be it known that 1, PAUL A. WAGNER, a citizen of the United States, residing, at Jersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Pile- Cutting Devices, of which the following is a specification.

The invention relates to mechanism for severing the float threads in the manufacture of corduroys and analogous pile fabrics, and the object of the invention is to provide easily operated means of simple construction for severing the threads of the pile loops or floats along the central lines of the rows, by which the cutting isreliably and uniformly performed and the employment of sharpened blades, with their attendant disadvantages, is avoided.

The invention consists in certain novel features and details of construction and arrangement by which the above objects are attained, tobe hereinafter described and claimed.

The accompanying drawings form a part of this specification and show the invention as applied to a: loom, and adapted to cut the floats during the manufacture of the pile fabric thereon.

Figure 1 is a vertical section taken on a plane parallel with the direction of the warp threads, and is partly in elevation.

Figure 2 is a corresponding plan view of a portion of the cutting device, showing one side of the latter only.

The remaining figures are on a greatly exaggerated scale and show details.

Figure 3 is a vertical section corresponding to a portion of Figure 1.

Figured is a vertical section taken on the line 4t4: in Figure 3.

Figure 5 is a plan view of a pile needle serving as one of the cutting members.

Similar reference numerals indicate the same parts in all the figures.

Received longitudinally in each row of pile loops or floats 10, is a relatively stationary or passive member shown as the ile needle 11 by which the floats are slightly distended and the threads supported along the central line of the row. The cutting is effected by the crushing action of a moving or active member shown as the cylindrical roller 12 forcibly urged toward and upon the pile needle and rolled or oscillated alternately in opposite directions upon the threads presented as above and lying between the active and passive members. The oscillations are preferably very rapid as compared to the slow advance of the floats upon the pile needles, so that each thread in its travel along the pile needle is subjected to many traverses of 'the roller, and complete severance of all the threads is assured, resulting in a uniformly perfect product. I

The mechanism by which this operation is performed may be variously constructed; as shown in the drawings, 13 is a frame attached to or forming part of the loom at the breast-beam and having a bed 14; over which the fabric passes on its way to the take-up roller, not represented. 15 are pile wires woven into the floats as usual and each connected to an eye 16 at one end of a pile needle 11 which is in effect a continuation thereof and lies inclosed by the row of pile loops or floats. At the opposite end of each pile needle is aloop 17 by which it is held in place by a wire 18 extending through the several loops and across the frame.

()n the sides of the frame are vertical cheeks orplates 19, only one of which is shown, each carrying a pair of depending links 20 pivotally connected at the lower ends to a pair of transversely extending bars 21 and 22 each of which is slotted to receive the rear ends of a series of strips of steel 23, arranged side by side and extending parallel with the pile needles 11, one for each of the latter and held firmly in both bars 21 and 22 by set-screws 24. The forward ends of the strips overhang the pile needles and terminate in downwardly pressing spring arms 25 extending immediately above the pile needles.

The bars 21 and 22 with their strips 23 are oscillated by a pitman 26 extending from the rear bar 22 to a crank-pin 27 on a disk 28 carried by a shaft 29 and rotated rapidly by any suitable means, not shown. The throw of the crank is preferably short and as the links 20 are relatively long, the

oscillations of the bars and strips take place with a negligibleamount of rising and sinking movement so that the spring arms reciprocate practically in a plane.

Across the series of pile needles 11 and beneath the spring arms 25, extends the roller 12 which is a loosely mounted cylindrical rod of steel of small diameter upon which the arms 25 exert a downward pressure and by their frictional engagement therewith rotate or oscillate it upon the pile loops or floats 10 as the latter are received and presented in the weaving process.

The loose roller is confined within limits determined by the downwardly curved hooks 30 at the ends of the arms and the pins 31 set in the arms at a prescribed distance from the hooks. The roller extends approximately at a right angle to the needles and the hooks 30 and pins 31 v maintain it in this position.

The shape of the pile needle 11 in crosssection may be circular or other form adapted to present a narrow line or face to the action of the roller, but the triangular form shown is preferred for the reason that it offers a wide base in contactwith the upper face of the fabric within the floats and thus distributes the pressure over a large area of the body of the fabric in the transfer of the pressure to the bed 14, and'for the further reason that the pile needle thus shaped maintains its position on the central line of the row of pile loops or floats and resists successfully any tendency to twist or roll within the pile loops or floats.

' The needles may be very small and the strips 23 and arms 25 very thin and mounted closely together to operate on goods having narrow rows of pile loops or floats. And the roller 12 may be a flexible steel wire of small diameter. The needles should be hard steel.

. erates successfully with cylindrical needles having no defined edge other than the narrow surface line upon which the roller impinges.

I claim 1. In a device of the character set forth, a

passive member adapted to lie within a line of pile loops, an actlve member in rolling contact with said passive member, and means for rolling said active member upon said passive member to sever the pile loop threads presented on said passive member.

'2. In a device of the character set forth, a passive member adapted to lie within a line of pile loops, an active member in rolling contact with said passive member, resilient means acting upon said active member to press the latter'into such contact, and means for rolling said active member upon said passive member to sever the pile loop threads presented on said passive member.

3. In a device of the character set forth, a

passive member adapted to lie within a lineof pile 100 s, an active member in rolling contact witi said passive member, resilient means in frictional contact with and acting upon said active member to press the latter into such contact, and means for reciprocating said resilient means.

4. In a device of the character set forth, a bed supporting the fabric to be treated, a needle received in a line of pile loops on said fabric and supported by the body thereof, a roller in contact with said needle, and

a pile needle adapted to lie within a line ofpile loops, a roller arranged transversely of said needle and in rolling contact therewith, an arm in frictional contact with said roller and arranged to press the latter upon said needle, and means for reciprocating said arm.

7. In a device .of the character set forth, a pile needle adapted-to lie within a line of pile loops, a roller arranged transversely of said needle and in rolling contact therewith, a resilient arm in frictional contact with said roller and exerting its force to press said'r'oller upon said needle, and means for reciprocating said arm.

8. In a 'device of the character set forth, a series of needles adapted to lie within a series of lines of pile loops, a roller arranged transversely of'said needles and in rolling contact therewith, a series of resilient arms each in frictional contact with said roller and exerting its force to press said roller upon said needles,and means for reciprocating said series of arms. I

9. In a device of the character set forth, a needle adapted to lie within a lineof pile loops and having an angular upper edge, a roller in rolling contact with such edge, and means for pressing said roller upon said needle and moving it relatively thereto.

10. In a device of the character set forth, a bed supporting'the fabric to'be treated,

a needle received within a line of pile loops on said fabric and having a plane lower face lying upon the body of said fabric and an angular upper edge, a roller in rolling contact with such edge, and means for pressing said roller upon said needle and for moving it relatively thereto.

11. In a device of the character set forth, a bed, a resilient pad thereon supporting the fabric to be treated, a series of needles received in a series of lines of pile loops on said fabric and supported by the body thereof, a roller arranged transversely of said needles and lying loosely thereon, a series of resilient arms arranged parallel With said needles and each in frictional contact with and upon said roller and exerting its force to press said roller upon said needles, means for reciprocating said series of arms, and means for limiting the rolling movement of said roller.

12. In a device of the character set forth, a needle adapted to lie in a line of pile loops and having an eye engaged by a pile-Wire in such line, a roller arranged transversely of said needle and in rolling contact therewith, and means for pressing said roller upon said needle and for moving it relatively thereto.

In testimony that I claim the invention 25 above set forth I aflix my signature.

PAUL A. WVAGNER. 

